Historical on-time performance
Atlanta to Greenville
153 miData through Dec 2025Source: US DOT · BTS
Flights on ATL–GSP arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 2,780 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time80%Medianon timep9035 minCancel1.1%Flights2,718
- Southwest AirlinesbestOn-time89%Medianon timep905 minCancel1.6%Flights62
Why flights run late
Delay causes
- Airline50%
- Weather8%
- Air traffic (NAS)16%
- Late aircraft26%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ATL → GSP
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 92% on time.
- Mornings92% on time · p90 10 min · 1,264 flights
- Middays88% on time · p90 15 min · 2,628 flights
- Afternoons82% on time · p90 30 min · 1,375 flights
- Evenings79% on time · p90 35 min · 1,490 flights
- Overnights76% on time · p90 40 min · 2,255 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 87% on time.
- Wednesdays87% on time · p90 20 min · 1,256 flights
- Tuesdays86% on time · p90 25 min · 1,256 flights
- Mondays84% on time · p90 25 min · 1,361 flights
- Thursdays83% on time · p90 25 min · 1,339 flights
- Saturdays83% on time · p90 30 min · 1,110 flights
- Fridays81% on time · p90 30 min · 1,339 flights
- Sundays78% on time · p90 35 min · 1,351 flights
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